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NetBSD 6.1.5 - man page for pci_conf_print (netbsd section 3)

PCI(3)				   BSD Library Functions Manual 			   PCI(3)

NAME
     pci -- library interface for PCI bus access

LIBRARY
     PCI Bus Access Library (libpci, -lpci)

SYNOPSIS
     #include <pci.h>

     int
     pcibus_conf_read(int pcifd, u_int bus, u_int dev, u_int func, u_int reg, pcireg_t *valp);

     int
     pcibus_conf_write(int pcifd, u_int bus, u_int dev, u_int func, u_int reg, pcireg_t val);

     int
     pcidev_conf_read(int devfd, u_int reg, pcireg_t *valp);

     int
     pcidev_conf_write(int devfd, u_int reg, pcireg_t val);

     char *
     pci_findvendor(pcireg_t id_reg);

     void
     pci_devinfo(pcireg_t id_reg, pcireg_t class_reg, char *devinfo, size_t len);

     void
     pci_conf_print(int pcifd, u_int bus, u_int dev, u_int func);

DESCRIPTION
     The pci library provides support for accessing the PCI bus by user programs.

     These functions are available in the libpci library.  Programs should be linked with -lpci.

CONFIGURATION SPACE FUNCTIONS
     The following functions are used to access PCI configuration space:

     pcibus_conf_read()
	   Access the PCI configuration register reg on the device located at bus, dev, func, and
	   place the result in *valp.  pcifd must be an open file descriptor to a PCI bus within
	   the target PCI domain.

     pcibus_conf_write()
	   Write the value specified by val into the PCI configuration register reg on the device
	   located at bus, dev, func.  pcifd must be an open file descriptor to a PCI bus within
	   the target PCI domain.

     pcidev_conf_read()
	   Access the PCI configuration register reg on the device associated with the open file
	   descriptor devfd and place the result in *valp.

     pcidev_conf_write()
	   Write the value specified by val into the PCI configuration register reg on the device
	   associated with the open file descriptor devfd.

MISCELLANEOUS FUNCTIONS
     The following miscellaneous functions are available:

     pci_findvendor()
	   Return an ASCII description of the PCI vendor in the PCI ID register id_reg.

     pci_devinfo()
	   Return an ASCII description of the PCI vendor, PCI product, and PCI class specified by
	   the PCI ID register id_reg and PCI class ID register class_reg.  The description is
	   placed into the buffer pointed to by devinfo; the size of that buffer is specified in
	   len.

     pci_conf_print()
	   Print the PCI configuration information for the device located at bus, dev, func.
	   pcifd must be an open file descriptor to a PCI bus within the target PCI domain.

RETURN VALUES
     The pcibus_conf_read(), pcibus_conf_write(), pcidev_conf_read(), and pcidev_conf_write()
     functions return 0 on success and -1 on failure.

     The pci_findvendor() function returns NULL if the PCI vendor description cannot be found.

SEE ALSO
     pci(4)

HISTORY
     The pcibus_conf_read(), pcibus_conf_write(), pcidev_conf_read(), pcidev_conf_write(),
     pci_findvendor(), pci_devinfo(), and pci_conf_print() functions first appeared in
     NetBSD 1.6.

BSD					  April 24, 2004				      BSD


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